27/07/2026
Heart disease is not a single condition—it refers to several disorders affecting the heart, such as coronary artery disease, heart failure, arrhythmias, and valve disease. The causes depend on the specific type, but many share common risk factors.
Common causes and risk factors
High blood pressure (hypertension): Over time, it damages blood vessels and makes the heart work harder.
High cholesterol: Excess LDL ("bad") cholesterol can build up in artery walls, narrowing them and reducing blood flow.
Smoking and to***co use: Damages blood vessels, raises blood pressure, and increases the risk of blood clots.
Diabetes: High blood sugar damages blood vessels and nerves that control the heart.
Obesity: Increases the risk of high blood pressure, diabetes, and high cholesterol.
Physical inactivity: Lack of regular exercise contributes to several heart disease risk factors.
Unhealthy diet: Diets high in saturated fat, trans fat, sodium, and added sugars increase risk.
Excessive alcohol use: Can raise blood pressure and contribute to heart muscle damage.
Chronic stress: May contribute indirectly by increasing blood pressure and leading to unhealthy coping behaviors.
Poor sleep: Conditions like sleep apnea and chronic sleep deprivation are linked to higher cardiovascular risk.
Other important factors
Age: Risk increases as you get older.
Family history and genetics: Having close relatives with early heart disease increases your risk.
S*x: Men generally develop heart disease earlier, while women's risk rises after menopause.
Inflammatory conditions: Diseases such as rheumatoid arthritis or lupus can increase cardiovascular risk.
Chronic kidney disease: Is associated with a higher risk of heart disease.
Less common causes
Congenital (present at birth) heart defects
Heart valve disorders
Infections affecting the heart
Certain medications or cancer treatments
Illegal stimulant drugs such as co***ne or methamphetamine
Reducing your risk
You can lower your risk by:
Eating a heart-healthy diet rich in fruits, vegetables, whole grains, lean proteins, and healthy fats.
Exercising regularly (aim for at least 150 minutes of moderate activity per week).
Maintaining a healthy weight.
Not smoking or va**ng to***co products.
Limiting alcohol.
Managing blood pressure, cholesterol, and diabetes.
Getting adequate sleep and managing stress.
Having regular medical checkups if you have risk factors.
When to seek emergency care
Call your local emergency services immediately if you or someone else has symptoms of a heart attack, such as:
Chest pain, pressure, or tightness lasting more than a few minutes
Pain spreading to the arm, jaw, neck, back, or shoulder
Shortness of breath
Cold sweat, nausea, or lightheadedness
Early treatment can significantly improve outcomes. If you're interested, I can also explain the differences between heart disease, heart attack, and heart failure.
For more details follow Dr Nyakundi